science

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Across
  1. 3. The head-thorax region of certain arthropods
  2. 6. The first stage of an insect's development, following the egg
  3. 9. Type of arthropod with two pairs of legs per body segment
  4. 11. The part of an arthropod body located behind the head
  5. 12. A type of gland found in crustaceans that helps excrete waste
  6. 13. A crustacean's breathing hole
  7. 14. A type of arthropod that includes insects and millipedes
  8. 15. The stage where an insect undergoes significant change to become an adult
  9. 18. The process by which arthropods shed their exoskeleton to grow
Down
  1. 1. A body part used for grasping or pinching, especially in crustaceans
  2. 2. The hard, chitinous outer covering of an arthropod
  3. 3. Class of arthropods with a hard exoskeleton and two pairs of antennae
  4. 4. Chemical signals used to communicate between organisms
  5. 5. A stage in an insect's life between the larva and the adult
  6. 7. Insects that develop through complete metamorphosis
  7. 8. Class of arthropods that includes spiders, scorpions, and ticks
  8. 10. A type of sensory organ found in some arthropods
  9. 16. Hard outer covering found in arthropods
  10. 17. A term referring to the division of the body into repeated segments
  11. 19. A stage in an insect's life cycle between the larva and the adult